Any disposition of property whether in trust or otherwise, heretofore or hereafter made for the maintenance, improvement, embellishment, or care of any cemetery, churchyard or other place for the burial of the dead, or any portion thereof, or grave therein, or monument or tomb, or other erections on or about the same is hereby declared to be a public charity and shall not fail by reason of such disposition having been made in perpetuity: Provided, Nothing in this act shall affect suits for the construction of any such disposition pending in any court of record in this state at the effective date of this act.